ANATONY AND PHYSIOLOGY CHAPTER
3 QUIZ EXAM WITH CORRECT
ANSWERS
Plasma Membrane - ANSWER-Flexible outer boundary
Cytoplasma - ANSWER-Intracellular fluid containing organelles
Nucleus - ANSWER-Control center; largest organelle; genetic library with
blueprints for nearly all cellular proteins in the DNA
Lipid Bilayer - ANSWER-Provide the barrier that marks the boundaries of a cell;
composed of two layers of fat cells organized in two sheets
Fluid Mosaic Model - ANSWER-The cell membrane as a two-dimensional liquid
that restricts the lateral diffusion of membrane components
Intracellular Fluid - ANSWER-Fluid of cytoplasma
Extracellular Fluid - ANSWER-Fluid around cells
, Interstitial Fluid - ANSWER-ECF that surrounds cells
Hydrophilic - ANSWER-tend to mix with water
Hydrophobic - ANSWER-tends not to mix with water
Integral Membrane Protein - ANSWER-Firmly inserted into membrane; function
as transport proteins, enzymes, or receptors
Peripheral Membrane Protein - ANSWER-Loosely attached to integral proteins;
function as enzymes; motor proteins for shape change during cell division and
muscle contraction
Ion Channel - ANSWER-Pore-forming membrane proteins whose functions
include establishing a resting membrane potential
Receptor Protein - ANSWER-Receptor is a protein molecule that receives
chemical signals from outside a cell
Tight Junction - ANSWER-Adjacent integral proteins fuse to form impermeable
junction encircling cell; prevent fluids and most molecules from moving between
cells
Desmosomes - ANSWER-"Rivets" or "Spot Welds" that anchor cells together;
Keratin filaments extend through cytosol to opposite plaque giving stability to cell
3 QUIZ EXAM WITH CORRECT
ANSWERS
Plasma Membrane - ANSWER-Flexible outer boundary
Cytoplasma - ANSWER-Intracellular fluid containing organelles
Nucleus - ANSWER-Control center; largest organelle; genetic library with
blueprints for nearly all cellular proteins in the DNA
Lipid Bilayer - ANSWER-Provide the barrier that marks the boundaries of a cell;
composed of two layers of fat cells organized in two sheets
Fluid Mosaic Model - ANSWER-The cell membrane as a two-dimensional liquid
that restricts the lateral diffusion of membrane components
Intracellular Fluid - ANSWER-Fluid of cytoplasma
Extracellular Fluid - ANSWER-Fluid around cells
, Interstitial Fluid - ANSWER-ECF that surrounds cells
Hydrophilic - ANSWER-tend to mix with water
Hydrophobic - ANSWER-tends not to mix with water
Integral Membrane Protein - ANSWER-Firmly inserted into membrane; function
as transport proteins, enzymes, or receptors
Peripheral Membrane Protein - ANSWER-Loosely attached to integral proteins;
function as enzymes; motor proteins for shape change during cell division and
muscle contraction
Ion Channel - ANSWER-Pore-forming membrane proteins whose functions
include establishing a resting membrane potential
Receptor Protein - ANSWER-Receptor is a protein molecule that receives
chemical signals from outside a cell
Tight Junction - ANSWER-Adjacent integral proteins fuse to form impermeable
junction encircling cell; prevent fluids and most molecules from moving between
cells
Desmosomes - ANSWER-"Rivets" or "Spot Welds" that anchor cells together;
Keratin filaments extend through cytosol to opposite plaque giving stability to cell
